package com.yzd.learnjava.io;

import java.io.File;
import java.io.FilenameFilter;
import java.util.Arrays;
import java.util.regex.Pattern;

import com.yzd.learnjava.util.Print;

public class DirList {
	public static void main(String[] args) {
		File path = new File(".");
		String[] list;
		list = path.list(new DirFilter("D.*\\.java"));
		Arrays.sort(list, String.CASE_INSENSITIVE_ORDER);
		for(String item : list) {
			Print.print(item);
		}
	}
}

class DirFilter implements FilenameFilter{
	private Pattern pattern;
	
	public DirFilter(String regex) {
		pattern = Pattern.compile(regex);
	}
	
	public boolean accept(File dir, String name) {
		return pattern.matcher(name).matches();
	}
}
